Hip Mobility-Stability Diagnostic
Test both hip qualities, then train the one your body lacks
- Difficulty
- Easy
- Time to result
- ~weeks to results
- Steps
- 5
- Confidence
- 97%
This diagnostic treats hip function as a balance between mobility and stability rather than assuming that more flexibility is always better. First, assess mobility by sinking into pigeon pose or a standing figure four; marked restriction suggests an immobility bias. Next, assess stability with a demanding X-shaped side plank performed with the elevated arm and leg extended and all ten toes facing forward. Shaking, collapsing, or being unable to hold the position indicates inadequate stability. The result determines the corrective emphasis: mobility-limited people add more mobility-oriented work, while mobile but unstable people strengthen the hips and surrounding musculature. The goal is not to maximize either quality independently, but to develop enough of both to control movement while preserving usable range of motion.
Origin
Extracted from Habits & Hustle, where Henry Abbott described movement assessments and corrective principles learned through his reporting on P3 and elite-athlete biomechanics.
Core principles
- 01Healthy hips require both mobility and stability
- 02Flexibility without muscular control can increase injury risk
- 03Strength without adequate range of motion creates a different limitation
- 04Simple movement tests can identify the quality that needs attention
- 05Training should counterbalance rather than reinforce an existing bias
How to run it
- 1
Screen Hip Mobility
Enter pigeon pose or perform a standing figure four by crossing one ankle over the opposite knee and sitting the hips back. Assess whether you can sink into the position without obvious restriction.
Pro tip Keep the chest up and move gradually rather than forcing depth.
Watch out Do not push through sharp pain or use momentum to manufacture range.
- 2
Screen Hip Stability
Perform a side plank with the body forming a large X: elevate the upper arm and leg while keeping all ten toes pointed forward. Try to lock out and hold the position with control.
Pro tip Watch for shaking, collapsing, or early quitting rather than judging only whether you briefly reach the position.
Watch out Use an appropriate regression or professional supervision if the full variation is unsafe.
- 3
Classify the Limitation
Treat difficulty sinking into pigeon or figure four as a mobility limitation. Treat failure in the X side plank as a stability limitation, while recognizing that a person may need work in both areas.
Pro tip Record each result so that future retesting is based on evidence rather than memory.
Watch out A self-test is a training guide, not a medical diagnosis.
- 4
Apply the Opposite Emphasis
Add more mobility work when the hips are restricted. Add resistance training and hip-strengthening work when the hips are mobile but unstable.
Pro tip People who mainly lift can add yoga-style mobility, while people who mainly practice yoga can add strength work.
Watch out Do not keep exaggerating the quality you already possess at the expense of the one you lack.
- 5
Build Toward Balance
Retest both movements and adjust the program until the hips demonstrate usable range and muscular control. Maintain both qualities rather than abandoning one once the weaker test improves.
Pro tip Use a qualified trainer or clinician to refine the target when progress stalls.
Watch out Passing one test does not guarantee complete hip health or eliminate injury risk.
In the wild
A highly flexible yoga practitioner sinks deeply into pigeon pose but shakes and collapses during the X-shaped side plank. Instead of adding more stretching, she introduces progressive side-plank variations, squats, and targeted glute strengthening while retaining a smaller mobility dose.
→ Her program begins addressing the muscular control that her flexibility alone does not provide.
A regular weightlifter is strong in the side-plank test but cannot comfortably sink into pigeon or a standing figure four. He reduces redundant strength volume slightly and adds controlled hip mobility and yoga-style sessions.
→ He targets restricted range without discarding the stability he already possesses.
Common mistakes
Treating More Flexibility as Always Better
Excessive mobility without enough muscular stability can leave the hips poorly controlled and may contribute to injury or degeneration.
Using Only One Test
Passing the mobility screen says nothing about stability, and passing the stability screen does not prove adequate mobility. Both qualities must be assessed.
Reinforcing Your Existing Bias
Continuing only with yoga when already highly mobile, or only with lifting when already stiff, can deepen the imbalance the framework is intended to correct.
Is it for you?
Best for
It is best for active adults who want a simple way to choose between mobility work and strength-focused hip training.
Not ideal for
It is not ideal as a substitute for clinical assessment when pain, acute injury, or major movement impairment is present.
From the transcript
“everybody's hips are either unstable or immobile, and you should know which group you're in, and I can tell you how to find out.”
“everyone who lifts weights should do yoga, and everyone who does yoga should lift weights”
“You need stability and mobility.”
From the episode
Episode 450: Henry Abbott: The Hip Stability Secret for Aging Well + Why ACL Tears Are 8x More Common in Women
Henry Abbott